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| Criterion |  UX Research Usability Testing |  Product Discovery Assumption Mapping |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-2 h je Session | 45-60 min | 30-60 min |
Participantsdifferent | Based on research question | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | Assumption map, Test backlog, Risk ranking | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ValidationUXPrototype | AssumptionsRiskExperimentsValidation | Root causeQualityOperations |
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